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a3/program.c

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+#include <stdio.h>
+#include <stdlib.h>
+#include <string.h>
+
+#define SIZE 1024
+
+int compare(const void* arg1, const void* arg2) {
+    char* s1 = *((char**)arg1);
+    char* s2 = *((char**)arg2);
+    return strcmp(s2, s1);
+}
+
+int main() {
+    int max_prijatych = 0;
+    if (scanf("%d\n", &max_prijatych) != 1 || max_prijatych <= 0) {
+        puts("Nespravny vstup");
+        return 1;
+    }
+
+    char* mena[SIZE];
+    memset(mena, 0, SIZE * sizeof(char*));
+    int pocet_mien = 0;
+
+    char line[SIZE];
+    while (pocet_mien < SIZE) {
+        memset(line, 0, SIZE);
+
+        char* r = fgets(line, SIZE, stdin);
+        if (r == NULL) break;
+
+        int pocet_znakov = strlen(line);
+        if (pocet_znakov <= 1) break;
+
+        if (line[pocet_znakov - 1] == '\n') {
+            line[pocet_znakov - 1] = '\0';
+            pocet_znakov--;
+        }
+
+        int najdene = 0;
+        for (int i = 0; i < pocet_mien; i++) {
+            if (strcmp(mena[i], line) == 0) {
+                najdene = 1;
+                break;
+            }
+        }
+
+        if (!najdene) {
+            mena[pocet_mien] = malloc(pocet_znakov);
+            memcpy(mena[pocet_mien], line, pocet_znakov + 1);
+            pocet_mien++;
+        }
+    }
+
+    if (pocet_mien == 0) {
+        puts("Ziadne prihlasky");
+        return 1;
+    }
+
+    qsort(mena, pocet_mien, sizeof(char*), compare);
+
+    puts("Prijati studenti:");
+    int prijatych = (max_prijatych < pocet_mien) ? max_prijatych : pocet_mien;
+    for (int i = 0; i < prijatych; i++) {
+        puts(mena[i]);
+    }
+
+    if (pocet_mien > max_prijatych) {
+        puts("Neprijati studenti:");
+        for (int i = max_prijatych; i < pocet_mien; i++) {
+            puts(mena[i]);
+        }
+    }
+
+    for (int i = 0; i < pocet_mien; i++) {
+        free(mena[i]);
+    }
+
+    return 0;
+}